Automatic fire-governor.



any-

- To allwhom imay concern:

An'munw. AnNoLn, or roan-aim, omtoon, a'ssrcnon 'ro SAFETY AND ncouomz DAMPERCOMPA'IY, OF POBTLAND,'OBEGQN, A CORPORATIGN OE OREGON.

Be it known that I, An'rat'n VVjAnxoLn,

a citizen of the United States, residing at Portland, county of Multnomah, and State of Oregon, have invented a new and useful Automatic Fire-Governor, of which the following is a specification.

This invention relates to that class of governors for automatic flue dampers set forth inmy eopendiiw application, Serial Number 452,063, filed Sept. 8, 1905. In devices of this character it is desirable to provide a means whereby the currents ofhot air and they pass upwardly through a stove-pipe or other flue, may be automatically regulated for the purpose of controlling the forced such currents.

-It is a well known fact that when a fire is being kindled the damper is desired to be open substantially to its maxinnun de 'ree, but after the tire has become hot the dampers must be closed in order to prevent excessive burning of the fuel and danger arising from heat passingupwardly through the chimney or fine. Many tires. in dwelling houses an the like originate during the night while the occupants are sleep- I ing, the trouble arising from the fact that the fires when the oe en )ants retire are low and seeming] inactive, but which fires burn up brightly during the night through many causes, such as unexpected changes ofwind's or other atmospheric conditions. By the inrentionhereiu set forth a flue damper is provided and so )ivoted in the flue as to normally depend rom its axis by the operation of gravity and which on being enga ed by upward currents of hot air will 0 use more or less of the flue by automatic operationof such currei-it's-" The invention furthermore com rises adjustable means for controlling an limiting the automatic operation ofsueh damper due to the hot air currents.

The foregoin and other objects of the invention are fu ly set forth hereinafter and illustrated in the accompanying drawings, in which-- Figure 1 is aside elevation of apreferred embodimentof this i;n'\'e.nti:on-.. portions being broken awa Y to disclose}.interior structure, and with tie parts in normal position; smnlar to Fig. 1 il l'ustrat Fig. 2 is a view I ing a slightly modified construction; lug- 3 is a plan View of the strut-tare. disclose 1n an'romarro rmn-oovnnnon.

' iary means are illustrated,

Specification of Letters Patent. Pateu ted sp t; 20, 191 0,. Application filed September 29, 1908. Serialdtl'o. 455,341.

I Fig. 1', the damper being closed; Fig.4 is a fragmentary elevation of the mechanism'of 3 Fig. 1, on an enlarged scale, and Fig. 5 is r detail ofa part of the controlling mechatbi ism to he hereinafter described.

Throughout the following description and on the several fi'guresof the drawings;

similar parts are referred to by similar reference characters.

At 10 is indicated a casing which may ice as j considered for the urposes of this descrip tion as any kind of apractical hot air flue, of any suitable form in cross section and of. any suitable material, or it may be a short section of tubing. to be applied to any well 7: known form of stove pipe or hot air flue.

Pivoted within said casing 10 on a horizo'ntal axis or axes is ada nper. adapted to hang normally downward from the axis or axes of rotation within the path of the hot a1r'75 currents. As illustrated herein said damper comprises a plurality of wings 11 and 12 ivoted on axes 13 and 14, respectively.

Vhile there are shown two of such wings,

it is to be understood that a single wing structure is contemplated within the scope of this invention. he axis 13 of the wing 11, assuming that a single wing structure may be employed, may be pivoted zit-any suitable location in the casing 10. The wing 11 'is so mounted and related to its axis 13 as to normally project from the vertical into the path of the upward currents of air through the'casing soasto be engaged and operated thereby when suchcnrrents become I sufficiently rapid. t i

A lever or arm 15 is connected to the axis 13 of the wing 11 and extends upwardly above the horizontal plane of said axis, when in normal position, and

outside of the casing. I 1

of variable currents of air through the casing may belmodified as to requirements, and 1 whereby the variable elfectiye weight- 0f the wing 18 automatically compensated. for

thmughoatsthc movements thereof. a: means for pro-vidingsuch adjustable counter-. balancing means thele er 15- is providedwith. a series of notches, 16, inany one of which may be eonnect eda pendent weight; 17

and-.4, auxi1- 7 As illustrated in l I, 3;

srefe'rably on the 95 Sa'; lever is provided with means for" ad uStabIy securing thereto counter-balancing means, whereby the effect coanter halonci itig controlling Avian-Ann COPY weight It; adjustably connected any one of a series of holes 19 in the lever 15 by means of a rod 20. Said rod is provided with a slot 21. inw liieh is adjustably secured a finger 22, against which the lower edge of the lever t-is adapted to impinge at a core tam point in the'rotation thereof about the axis 1 By this construction the. lever may swing comparatively freely on said axis until the finger 22 is impinged, at which time the weight 18 will have positive connection therewith and further movement of the lever will require a positive lifting of the weightylS, thereby controllin-gand retarding such movement of the leverm accordance with tire-position at which the rod 20 is conncc-ted.

As a means for controlling the speed at which the damper will operate tl'iere s i1lustratod a fan construction embodying a toothed segment 33 secured in any suitable fixed position, and with which a fan 24 journaled upon the lever 15 has cooperation through a 'tnovtauent thereon. lVhen the lever 15.

turns on its pivot or axis 13-t-he shaft 26 and parts connected thereto will he causedto r0- tate in its l'iearing 27. The speed of such rotation will he controlled by the blades of the fun 2-1. This construction is especially de sirahle in connection with lines leading from large furnacesind in some instances it is essential that the rotation of the fan shall he further controlled, as hy the use of a spring 28 andthumh nut 25), through which the huh of the fan may he caused to engage frictionally nponthc :nljacent end of the hearing 27. it is contemplated that the fan may have Free rotation with respect [Ollie hearing :37 if so desired; The ends of the scgnu-nt 23 will preferahly he provided with stops :3 to prevent any possibility of the lever 13 and parts carried thereby swinging too far in either direction. p I

The wings ll and 12- are connected in any suitahlo manner for simultaneous operation on their axes. .prt ividvd pinions 3t) and 31 connected to the respw-tixe axes and intern-iesliing with eachother. Figs. 1, I and 4, the pnuons have loose conum-lion with tllttl' axes and wings.

. IQU V connectionsmay he of any suitable constrnmi n or. charactcrlmt as shown eonr .prist- :a lug El.) r gidly connected to the axis and a kvy'ill connected to tho pinion and ex- As shown herein there are In the construction illustrated in' Such:

prcy'rnts longitudinal displaccnu'nt of the pinion.

whereoil: or inflammable fuels are emploved it frequently occurs that a sudden blast or explosion of the fuel takes'place and which would tend to damage the damper mechanism. For this reason it isessentiul in such large structures to provide such loose con. :nt-ction between the, wing and the lever mechanism. In case an explosion or sad- .donioreihle hlastoccurs, such as could nototherwi sebe provided for by the lever and connected ciounter-haliincing wing of wings may swing upwardly against gravity independently of such lever connections. This operation it will he understood will be only momentary and immediately thereafterthe parts will resume their normal positions. Inaddition to the controlling means and auiiliary thereto 1 provido a suitahle positive stop for the pinions. '1 his stop as shown is in'the nature of a. U-shapcd chuck "5 adapted to engage one of the pinions in any two oppositely tiliptlrttl spaces between gear teeth. This chuck is provided with legs 36 and 37. the former of which is thinner than the latter. By placing said chuck on thc pinionas indicated in Figs. 1

By changing the chuck from one sci o spaces to another the degree of rotary movement of the pinion may he altered, and

such change is not sullit-iently delicate the ('litll'k may he turned cud for end so as to vary the thickness of the engaging leg thereof.

"lhc structure illustrated in Fig. 2 is adapted pm'tit-nlarly for simple structures such as domestic stove pipes, or the likv. and ildesirt-d the lever 15 may have fixed 5 relation to the wing ll. i 5 Having thus described the en'ilxuliment of the invention now hest known to me. but without desiring to he limited to the exactmnstructioi-i illustrated. what I claim and desire to set-.m-ohy Letters Patent. of the United Hates. is: t

1. To an autmnatie tire governor. the compivoted therein on a horizonta axis and normally pendent from said axis, a lever vonuectcd to said wing and normally extending upward heyond the horizontal plane of \\'lltltl) the same counterhalances the weight. of the wing uniformly as the latter swings on its axis under thrinfllu-nce of upward currents of air within the casin i In a-naiitomaiic lire gOV'fl'llOl, the coinhination of anuprightcasing. a wing pivotc'd therein on aflliorizontu-l avis and nor 1 utility pendent. t'lwrvfrom h \"gravily lover means, the

andzl the'eoiipcrating pinion will he limited p in its relation thereto in an ohvioils |uan-m;r.

if it is found that the adjustnwut due to hination of an upright llue casing, a wing In certain types of furnaces; especially said axis. and uu-ans connected to said lever a connterinilaneing -of said puuons.

connected to said wing an anciug means adjust-ably."connected to said:

lever above said-axis, and means to control j the speed of movement stantially as set forth.-

3. In an automatic fire governor, the combination of an -upright casing, a wing pivoted therein and normally. pendent, from-its pivotal axis, a lever connected to 'said wing and of said lever, 'suhextending normally above said axis. counter balance means connected tosatd lever, and 5 means associated with said wing for controlling its pivotal movement on its axis.

4. In an antomatiefire governor. the com-v bination of a casing. a wing pivoted therein and normally pendent from its pivotal axis,

means connected to said wing and extending normally above said. axis to counterbalance its pivotal movements,

the Wing throughout t for limiting the and an adjustable chuck pivotal movements of said wing on its axis.

6. In an automatic fire governor, the com-- hination of a casing. a plurality of wings pivoted therein on horizontal axes. intermeshing pinions connected to said axes, a couuterhalancing lever comiccted to one. of

said pinions. positive stop means connected to the other of said piuious to limitthe rotation thereof. retarding means connected to aid lever. and nicausto vary the cth-ct of mid retarding means. a

7. In an automatic fire governor. the comp d normally extend-Q lng upwardly above said axis, counterlmlpinions to limit the ro-,

hinalion of a casing, a wing pivoted therein on a horizoutai axis. cooperating tl'ltitults.

one ofwhich is-journalcd. in th casing,

means conuectinp the other f said piuions" vvi thsa'id. axis. such means comprism.5 a in;

ctmnec-tcd to the other ot said hi nihers. wher by the magma have movcunntiudependently of the pnuon connected th reto,

and ronnterhalancing meansconnected to the pinion mounted on the wing axis, subltllltlillly as set forth. i

on oueof the members and a curved pm I in an automatic nre governor. the com- 7 hination of a casing, a plurality of wings pivoted therein on a horizontal axis and. normally pendent therefrom, iuterengaguig' pinious connected to said axes of the wings to cause simultaneous movement thereof, counterhalancing means connected to one of said pinions. adjustable retarding means connected to said connterbalanciug means. and a positive of said pinious, substantially as set forth.

J. In comhiuation. a wings jourualed in the tlue, means to cause simultaneous movement of the wings, and retarding means for said wings compri ing a rack. a pinion to mesh with the rack, and a fan operable by the pinion.

, 10. In combination. a tlue. a plurality of wings journaled in the tine, a lever connected to .one of said -\vings, retarding means ttsiHtXlttitll with said lever. counterbalancing means connected to. said lever and adapted for such delicate :uljusttuent a slight variation in the volume dratt through the llue. I

' ARTHUR \\'.;ARNOL'D.

upon force of 'ituesses (itlfl. L. liunuzn,

h. E. Donor).

chuck connected to the other.

fine, a plurality of 

